Add a feature flag for SPA metrics

- Add a new SETTINGS_ENABLE_SPA_METRICS flag.

Fixes: 277540990
Bug: 253979024
Test: atest SpaActivityTest SpaLogDataTest MetricsDataModelTest
Change-Id: I6da801691fd34fd133ec25d3a45ed6124bec51a1
Merged-In: Iba7a44715cf6ba78c3b84d559faf71a0be33d8d3

src/com/android/settings/spa/SettingsSpaEnvironment.kt

@@ -17,6 +17,7 @@
 package com.android.settings.spa
 
 import android.content.Context
+import android.util.FeatureFlagUtils
 import com.android.settings.spa.app.AllAppListPageProvider
 import com.android.settings.spa.app.AppsMainPageProvider
 import com.android.settings.spa.app.appinfo.AppInfoSettingsProvider
@@ -43,6 +44,7 @@ import com.android.settings.spa.system.LanguageAndInputPageProvider
 import com.android.settings.spa.system.SystemMainPageProvider
 import com.android.settingslib.spa.framework.common.SettingsPageProviderRepository
 import com.android.settingslib.spa.framework.common.SpaEnvironment
+import com.android.settingslib.spa.framework.common.SpaLogger
 import com.android.settingslib.spa.framework.common.createSettingsPage
 import com.android.settingslib.spaprivileged.template.app.TogglePermissionAppListProvider
 import com.android.settingslib.spaprivileged.template.app.TogglePermissionAppListTemplate
@@ -88,5 +90,8 @@ open class SettingsSpaEnvironment(context: Context) : SpaEnvironment(context) {
             ),
         )
     }
-    override val logger = SpaLogProvider
+    override val logger =
+        if (FeatureFlagUtils.isEnabled(context, FeatureFlagUtils.SETTINGS_ENABLE_SPA_METRICS))
+            SpaLogProvider
+        else object: SpaLogger {}
 }